/// Inject rules for generic, elevated surfaces. This is used for
/// elements that overlap other content, such as panels and sidebars.
@mixin am-paper {
  @include am-fill(paper);
  border-radius: 2px;
  box-shadow: 0 1px 2px rgba(#000, 0.24), 0 0 2px rgba(#000, 0.15);
}
